PSLE
Anna wanted to buy a dress. She saw a blue dress on sale at 20% discount and a purple dress at 30% discount. Both dresses had the same original price before the discounts. To buy the blue dress, Anna would need $6.30 more that what she had. So Anna bought the purple dress. After that, she had $20 left.

1. What was the original price of the blue dress?
2. How much money did Anna have at first?

	Blue dress	Purple dress
Before	100%	100%
Change	- 20%	- 30%
After	80%	70%

(a)
Difference in the discount between the blue dress and the purple dress
= 30% - 20%
= 10%

Additional amount that Anna needed to pay if she would buy the blue dress
= 6.30 + 20
= $26.30

10% →  26.30
100% → ^26.30₁₀ x 100 = 263

Original price of the blue dress = $263

(b)
Price of the purple dress after discount in percentage
= 100% - 30%
= 70%

Price of the purple dress after discount
= ⁷⁰₁₀₀ x 263
= $184.10

Amount that Anna had at first
= 184.10 + 20
= $204.10

Answer(s): (a) $263; (b) $204.10